>>It might not seem like a big deal, but the ability to recognize that the face in the mirror is your own makes us part of a pretty exclusive club in the animal kingdom. Humans obviously can do it (from about 15 months of age), and so can apes, monkeys, dolphins, elephants, and some birds. Now a fish species has passed the mirror test for the first time, which may suggest that the animals are smarter than we give them credit for.<<
https://newatlas.com/fish-pass-self-awareness-test/58392/